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Evolutionary biology

The hydrogenosome's murky past

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The evolution of specialized cellular powerhouses called hydrogenosomes has long confounded biologists. The discovery that in some cases they have their own genome sheds some much-needed light on the issue.

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Figure 1: Subunits of mitochondrial respiratory complex I.
Figure 2: The conflicting evolutionary positions of the Trichomonas vaginalis hydrogenosome.

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Gray, M. The hydrogenosome's murky past. Nature 434, 29–31 (2005). https://doi.org/10.1038/434029a

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